Catalytic Converter compatible with 2.5L 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Altima Rear (2 o2 sensor)

Pipe diamiter was far smaller than stock. It bolts up correctly, but the header is cut from a 3in oitlet to a 2.25 in this piece.

was a little shorter than the OEM but it did fit , Warning this one came with TWO O2 sensor spots in it , I have to make a plug to close the extra hole , other than that over a week of service and no problem

As always, after my thorough research on all well known auto parts websites Royal exhaust CAT came out at the top. They have the best price, clear picture and product description, and inclusion of hardware is a plus.

Fit was off quite a bit. Couldn’t reuse the hanger. Probably should look elsewhere.

Everything lined up with the exception of the hanger.

Perfect fit

Love it,No regrets on my purchase

This part did not fit. It was a little too small and short.

I have a 2009 Altima Coupe with the 2.5l engine. My car only has one O2 sensor, so check your vehicle first and see if you have two. If you only have one then you will need to find a M18 fine thread bolt or an old O2 sensor from a junk yard to plug the hole after the catalytic converter. Next the hanger on the new exhaust was welded in the wrong place. I had to bend the hanger rod up towards the car for it to reach the stock hanger. Lastly the supplied metal o ring gasket that mounts between the engine exhaust header and the flange of the new exhaust is to small. It allowed exhaust blow by and did not seal. Luckily I still had the old o ring and placed it over the supplied ring and this finally stopped the exhaust leak. We will see how long this lasts.

It is a ok product for the money over OEM. But be aware when installing there is no front gasket just a filler ring supplied. Had to purchase gasket kit and make my own to stop bad leak in front hook up. And the mounting bracket way off on placement it had to be heated and bent a long way to mount on bracket on frame. It basically doesn't work but rather just hangs on by the flanges. It was also an inch shorter than OEM and the back section of muffler was forced forward in order to bolt it together. But in the end it did work. So for the cost you get what you pay for.

Exhaust pipe started to rattle inside after one week in the car!

Very close bolt on, the hanger bars were smaller and required some rigging ro make it work but it's been on the car for a year and still going!

Very close but not exactly direct fit as the product suggest. Was about 2" shorter than the original pipe also was not the exact diameter to match up with the front flange. Installed the first time with supplied gasket ring, did not seal. Installed a second time using old gasket ring and gasket maker, still wondering seal at front flange. Contemplating removing and returning.